Execution Time

how to find the execution time of a matlab program.

[Paulo Abelha]

Hi,

I've coded a function that might help you:

https://uk.mathworks.com/matlabcentral/fileexchange/59187-displayestimatedtimeofloop--tot-toc--curr-ix--tot-iter--

[Ijaz Ahmad]

The best to do is to use the "Run and Time" in the "Editor" menu. It shows a complete summary of every function that has been called and the time it has taken.

[Walter Roberson]

Run and Time changes the execution time, sometimes a fair amount.

Answer 1

[Namrata]

execution time can be found by tic-toc command.place tic; before the first line of code and toc; after the last line of the code

e.g.

tic;

MATLAB code

toc;

[Masoud Afrakhteh]

Wow... Thanks !!!

[mahesh vuppala]

very thanks to you

[Shoriful Islam Shuvo]

Is there any limitation of tic toc command?

[Dario gms]

The first time I read this i though it was a bad joke, nvm thank you

[Bin Qi]

It is a legit answer. Thank you.

Answer 2

[Iain]

Its more powerful to use "now" to get the current time than tic & toc, but it takes a bit more effort.

[Alexander Andreychenko]

Are you aware of anything that allows folding of tic/toc ? I found that there are undocumented options for tic and toc but what I exactly want is the following:

tic
  % doing something large
  tic 
    function_1();
  functionTime_1 = toc;

   tic
     function_2();
   functionTime_2 = toc;

wholeTime = toc;

Currently, in this case I see functionTime_1 and functionTime_2 but I don't see the way to get wholeTime.

[Walter Roberson]

now1 = tic();
function_1();
functionTime_1 = toc(now1);
now2 = tic();
function_2();
functionTime_2 = toc(now2);
wholeTime = toc(now1);

Answer 3

[Mohd Sapiee]

Also it is very useful to know the time taken or elapsed in Matlab is reading data from an Excel file, especially for very large number of Excel cells.

tic;

xlsread( );

toc;

Answer 4

[Oleg Komarov]

Also, you can use the profiler

Oleg

[Anuj Patil]

Profiler will give compile+execution time,so not useful in most applications. timeit seems a good option.

Also you can manually use 'clock' function.

Answer 5

[Royi Avital]

I really like using TimeIt.